Protection and excavation method for steep mountains near existing roads

Abstract

The invention discloses a protection and excavation method for steep mountains near existing roads. The method comprises the following steps that firstly, near roads are widened and rerouted for protection; then, GPS2 flexible active protection devices are pre-set up on the mountains of excavation sections of the near existing roads for pre-protection; then, SNS flexible passive protection devicesare adopted for double-layer pre-protection; and finally, the protected mountains are excavated in a layered and segmented mode in sequence from tops to bottoms and from insides to outsides, and whenexcavation is carried out at one working height each time, one passive protection device is dismantled till excavation is carried out at the designed elevation of the mountains. According to the method, the method is used for excavation construction of the steep mountains near the existing roads for bridges and roads, the safe operation of the roads can be guaranteed, the safety of surrounding residential buildings can be guaranteed, the damage range of excavation flying stones and mountain rolling stones can be effectively controlled, the construction is safe and reliable, compared with theprior art, the method is good in economical efficiency, and the method can be widely applied to excavation construction of the steep mountains near the existing roads for bridges and roads.

Description

technical field [0001] The invention belongs to the technical field of mechanical cold chisel stonework excavation, and in particular relates to a steep mountain protection and excavation method adjacent to an existing road. Background technique [0002] With the continuous development of national bridge construction, especially the construction of new bridge lines near the existing roads near the mountain is increasing, and sometimes the existing roads are relocated because the bridge piers occupy the existing roads. The situation, and the bridge pier is located near the road and the mountain, and the situation of nearby residential buildings is complicated. In this case, when designing the construction plan, it is necessary to protect the operation safety of the road and the safety of the residents around the mountain. Therefore, the following requirements must be met in the excavation design: (1) The safety and smoothness of the existing road. (2) The safety guarantee of...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a steep mountain protection and excavation method adjacent to the existing road, which solves the lack of a method in the prior art that can not only protect the operation safety of the road, but also protect the safety of the residents around the mountain. The problem of the excavation method

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